Update port randomization

Author: danbarr

docs/toolhive/guides-cli/run-mcp-servers.mdx

@@ -323,14 +323,14 @@ selects a random port to expose from the container to the host and sets the
 
 ```mermaid
 graph LR
-    A[MCP client] -->|HTTP request to<br/>proxy port: 7654| B[ToolHive proxy<br/>process<br/>Port: 7654]
-    B -->|Forwards to<br/>host port: 8432| C[<strong>MCP container</strong><br/>Host: 8432 → Container: 8432<br/>ENV: MCP_PORT=8432]
+    A[MCP client] -->|HTTP request to<br/>proxy port: 5432| B[ToolHive proxy<br/>process<br/>Port: 5432]
+    B -->|Forwards to<br/>host port: 9876| C[<strong>MCP container</strong><br/>Host: 9876 → Container: 7654<br/>ENV: MCP_PORT=7654]
     C -->|Response| B
     B -->|Response| A
 ```
 
 This is equivalent to running a Docker container with
-`docker run -p <random_port>:<random_port> ...`
+`docker run -p <random_host_port>:<random_container_port> ...`
 
 For MCP servers that use a specific port or don't recognize those environment
 variables, specify the container port for ToolHive to expose using the